TITLE:
The Microwave Synthesis and Photocatalytic Activity of W6+-Doped TiO2 Nanocomposite
AUTHORS:
Yulin Tang, Shuibin Yang, Quanxin Zhu, Xuehong Liao
KEYWORDS:
W6+-Doping, Titanium Dioxide, Microwave Synthesis, Photocatalysis, Methyl Orange
JOURNAL NAME:
Modern Research in Catalysis,
Vol.5 No.2,
April
12,
2016
ABSTRACT: W6+-doped
TiO2 was prepared by sodium tungsten (VI) and titanium sulfate with
sodium dodecyl sulfate as surfactant under microwave irradiation. The samples
were characterized by X-ray diffraction (XRD) and Scanning electron micrograph
(SEM). The results showed that the as-prepared nanocomposite of inventory molar
ratio of 2% calcined at 500°C for 2 h was anatase. The SEM showed that the
majority of the catalyst was a relatively flake structure, and some fine
particles attached to it. We also studied the photocatalytic activity of the
as-prepared samples by using degradation of methyl orange. The factors
including inventory molar ratio and concentration of W6+-doped,
calcined temperature, amount of hydrogen peroxide and acidity of solution were
investigated. When the catalyst was 1.0 g/L, pH was 2, C(H2O2)
was 3 mL/L, the degradation rate of TiO2 for methyl orange of 20
mg/L reached 79.63% in 40 min.